Question about optimal io size

[Erwan Velu]

Hi folks,

When doing a "parted -a optimal /dev/sdb mkpart primary 0 100%", parted tells me that the partition will not be optimal.

Note the 0 and not "0%".

I've been checking and the optimal_io_size for the device is 1MB. I wonder why starting from 0 is problem.

Shall we really start _after_ the first optimal_io_size offset ?

I'm running parted (GNU parted) 2.3

Cheers,

Erwan